NCP81141MNTXG

Series:	--
Packaging:	Tape & Reel (TR)
Part Status:	Active
Applications:	Controller, Intel VR12.6
Voltage - Input:	4.5 V ~ 25 V
Number of Outputs:	1
Voltage - Output:	--
Operating Temperature:	-40°C ~ 125°C
Mounting Type:	Surface Mount
Package / Case:	28-VFQFN Exposed Pad
Supplier Device Package:	28-QFN (4x4)

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Application Field and Working Principle of NCP81141MNTXG

The NCP81141MNTXG is an advanced current-mode PWM controller, specifically designed for high-performance synchronous buck applications. Its features include an internal high-voltage current-sense amplifier, an internal 5.0V reference, and up to 30μA of I²C port supply current. This device offers superior performance and flexible configuration, making it an ideal choice for applications such as low-cost, point-of-load, non-isolated DC/DC converter applications and point-of-load (PoL) secondary-side control in a two-switch forward or synchronous buck configuration.This device uses an ultra-low supply current and a small package for size and cost reduction that is critical for footprint-constrained applications. An adjustable soft-start feature reduces inrush current and system power loss during start-up and a built-in adjustable compensation feature provides system stability without the need for external components. In addition, it provides an I²C-controlled adjustable output voltage from 0.6V to 95V.The NCP81141MNTXG operates in current-mode control, which offers fast transient response, improved accuracy of output voltage regulation, stable operation over all load conditions, and protection against transients. It offers two selectable operating frequency modes: 1 MHz to 2 MHz, which can be adjusted to reduce the size of external components and to maximize efficiency.In addition, it supports both internal and external synchronization and a wide range of operating frequencies from 200 kHz to 1 MHz. A selectable phase shedding feature further decreases power losses at light loads, while a maximum duty cycle limit provides excellent current shaping performance in discontinuous conduction mode.A low-voltage lockout feature provides protection against a low-voltage supply, while an Enable pin controls the device shutdown mode. Fault protection features include under-voltage lockout, over-temperature shutdown, and cycle-by-cycle current limit. The input voltage range covers from 4.0V to 27V, and the output current can be up to 40 A.In conclusion, the NCP81141MNTXG is an ideal choice for applications requiring fast transient response, stable operation, high efficiency and accurate voltage regulation. Its on-chip features include an internal high-voltage current-sense amplifier, an adjustable soft start, selectable operating frequency, and adjustable compensation, which make it ideally suited for high performance, low-cost, main and point-of-load DC/DC converter applications.

• PMIC - Voltage Regulators - Special Purpose

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